Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Quality Control of: N1,N1-Bis(3-(Dimethylamino)propyl)-N3,N3-dimethylpropane-1,3-diamine, Which mentioned a new discovery about 33329-35-0
The invention relates to a method for the manufacture of an insulation moulding, in particular of refrigerating appliances, in which the moulding is provided by filling a cavity between an inner and an outer wall of an open-box-shaped mould (M) with a polyurethane reaction mixture and allowing the polyurethane reaction mixture to cure to a polyurethane containing polymer C, the inner and outer wall being arranged in a fixed distance to one another and each wall comprising a bottom face (3) and a plurality of side faces (1, 2, 4, 5), whereas the polyurethane reaction mixture is fed through an inlet opening (I) positioned in the middle area of the bottom face (3) of the outer wall, wherein before filling the cavity, the mould (M) is turned with the bottom face of the outer wall downwards so that the polyurethane reaction mixture is foaming upwards to fill the cavity, whereas the method is characterized in that the polyurethane reaction mixture comprises an isocyanate component B which is reacted with an emulsion comprising (I) an isocyanate-reactive composition A, containing a polyol mixture Al consisting of at least three polyols A1a, Alb and A1c as the continuous phase and (II) at least one physical blowing agent T as the disperse phase, wherein: (i) A1a is a polyether polyol having a hydroxyl value from 15 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 6.0, obtained by the addition of an epoxy to one or more starter compound(s) selected from the group consisting of carbohydrates and difunctional or higher-functional alcohols; (ii) Alb is a polyether polyol having a hydroxyl value from 100 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 5.0, obtained by the addition of an epoxy to an aromatic amine; (iii) A1c is a polyester polyether polyol having a hydroxyl value from 100 mg KOH/g to 450 mg KOH/g and a functionality from 1.5 to 3.5, obtained by the addition of an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. The invention further relates to an insulation moulding prepared by that process.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, Quality Control of: N1,N1-Bis(3-(Dimethylamino)propyl)-N3,N3-dimethylpropane-1,3-diamine, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 33329-35-0
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI